Dokdoin - Convenient & Safe Web Tools

Free QR Code Generator

Create high-quality QR codes with your own logo and gradient colors by simply entering a URL.

Enter QR Code Conversion Content
Color and Background Settings
Solid
Gradient
45°
QR Design Shape Settings
Square
Circle
Rounded Dot
Square
Rounded Square
Circle Eye
Square
Rounded Square
Circle Eyeball
Insert Center Logo
Select Logo Image File or Drag Here (PNG / JPG / SVG)
Output Details Settings
Scan Recognition Rate Assurance Guide
  • Increase Background Contrast: The clearer the contrast between the QR code color and the background color, the much faster the recognition speed. (White/bright background recommended)
  • Logo Size Limit: Based on recovery level (H), the recommended logo size is within 20%. Expanding it beyond 25% may cause scanning issues.
  • Scan Test: Before printing or distributing, please be sure to verify connection success in advance by pointing your smartphone camera at the QR code on this screen.

Free QR Code Generator Guide & Specifications

The simple high-resolution QR Code Generator is a utility tool that safely converts data like URLs, texts, and Wi-Fi profiles offline in just 1 second. It maintains high scan compatibility even with custom gradient styles and center logo masking.

Key Features

  • 🎨 Elegant Gradients & Colors: Output designer-style QR codes with custom gradients, angles, and color combinations, as well as solid colors.
  • 🛡️ Smart Backdrop Shield: Automatically clears QR code dots behind the logo and applies a circular or square shield matching the background to prevent scan camera conflicts.
  • 📐 Vector SVG Format: Fully supports exporting in lossless Vector Graphic (SVG) format, perfect for high-resolution print works or large banner designs.

How to Use

  1. Error Correction Control (ECC): QR codes have built-in error correction that allows them to be read even if up to 30% of the area is dirty or covered. Inserting a center logo automatically locks the ECC level to H (High) to maintain scan rate.
  2. Offline Privacy: This tool does not send your input text to any server; all rendering is done client-side inside your browser, allowing safe generation of private links or internal staging servers.

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